It's not "could not get into DMOZ." It's "haven't yet been considered for listing in DMOZ."
There are probably 200 editors who COULD have reviewed it, which means there are at least 200 sets of reasons why they haven't yet.
I'm one of those that COULD, but I don't think I've ever listed a Shopping/Jewelry site. The ODP being down, I'll give some of my reasons. Prejudice against jewellers? No. Just other things that I'd rather do, or that someone important to me had rather me do.
I tend to be easily distracted, so for me, "focus on activity X" means "start something related to X every time I return from a distraction." And I have a list of ODP activities I focus on. That list is already too long for the editing time I have, so I carefully resist the temptation to jump into new major projects (like, for instance, cleaning up the Shopping/Jewelry, Shopping/Health, Shopping/Books, or News backlogs) unless I can convince myself that they are related to current activities. I was able to convince myself that News relates to my work on the SpamCops beat (since it is surprisingly a prime target for both MLM spammers and e-mail spammers). Similarly, Shopping/Health is a prime target for affiliate spammers and MLM spammers. And Shopping/Books is close to my interests -- both my ODP editing and my personal internet use.
But Shopping/Jewelry? That's just ODP-public-service work, and my time would be more efficiently spent doing THAT somewhere are closer to my own knowledge -- but equally backlogged. I know you won't appreciate this, but there is probably some other editors choosing to ignore the enormous Shopping/Music backlog to focus on Shopping/Clothes and Shopping/Jewelry -- and I hope someday soon you have a chance to appreciate THEIR work.
If the other 199 editors came in, they'd have similar reasons (but no doubt different details.)